Breeder \Breed"er\, n.

1. One who, or that which, breeds, produces, brings up, etc.

She was a great breeder. --Dr. A. Carlyle.

Italy and Rome have been the best breeders of worthy men. --Ascham.

2. A cause. ``The breeder of my sorrow.'' --Shak.

Source: Webster's Revised Unabridged Dictionary (1913)